Scheduler: use timezones second parameter in demo #154

Job	Run time
Build	1s
${{ matrix.constel }}-firefox	-1s
${{ matrix.constel }}-${{ matrix.timezone }}	-1s
${{ matrix.constel }}-chrome	-1s
${{ matrix.constel }}-${{ matrix.kind }}	-1s
${{ matrix.constel }}-no-csp	-1s
Send notifications	0s
	-4s

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